Breaking news 11/23-11/30 09
Posted: Mon Nov 23, 2009 12:43 pm
They have circulated BOTH beams at once !!!
AND COLLIDED THEM !!!
*******************************************
Source: CERN
Content: Press Release
Date Issued: 23 November 2009
*******************************************
Two circulating beams bring first collisions in the LHC
Geneva, 23 November 2009. Today the LHC circulated two beams
simultaneously for the first time, allowing the operators to test the
synchronization of the beams and giving the experiments their first chance
to look for proton-proton collisions. With just one bunch of particles
circulating in each direction, the beams can be made to cross in up to two
places in the ring. From early in the afternoon, the beams were made to
cross at points 1 and 5, home to the ATLAS and CMS detectors, both of
which were on the lookout for collisions. Later, beams crossed at points 2
and 8, ALICE and LHCb.
"It's a great achievement to have come this far in so short a time," said
CERN* Director General Rolf Heuer. "But we need to keep a sense of
perspective – there's still much to do before we can start the LHC physics
programme."
Beams were first tuned to produce collisions in the ATLAS detector, which
recorded its first candidate for collisions at 14:22 this afternoon.
Later, the beams were optimised for CMS. In the evening, ALICE had the
first optimisation, followed by LHCb.
"This is great news, the start of a fantastic era of physics and hopefully
discoveries after 20 years' work by the international community to build a
machine and detectors of unprecedented complexity and performance," said
ATLAS spokesperson Fabiola Gianotti.
"The events so far mark the start of the second half of this incredible
voyage of discovery of the secrets of nature," said CMS spokesperson
Tejinder Virdee.
"It was standing room only in the ALICE control room and cheers erupted
with the first collisions," said ALICE spokesperson Jurgen Schukraft.
"This is simply tremendous."
"The tracks we're seeing are beautiful," said LHCb spokesperson Andrei
Golutvin, "we're all ready for serious data taking in a few days time."
These developments come just three days after the LHC restart,
demonstrating the excellent performance of the beam control system. Since
the start-up, the operators have been circulating beams around the ring
alternately in one direction and then the other at the injection energy of
450 GeV. The beam lifetime has gradually been increased to 10 hours, and
today beams have been circulating simultaneously in both directions, still
at the injection energy.
Next on the schedule is an intense commissioning phase aimed at increasing
the beam intensity and accelerating the beams. All being well, by
Christmas, the LHC should reach 1.2 TeV per beam, and have provided good
quantities of collision data for the experiments' calibrations.
For photos of the first collisions :
http://press.web.cern.ch/press/PressRel ... 7.09E.html
For photos inside the CERN Control Centre see :
http://cdsweb.cern.ch/record/1223969?ln=fr
Follow LHC progress on twitter at http://www.twitter.com/cern
For photos, video and latest information see:
http://press.web.cern.ch/press/lhc-first-physics/
See today's press conference here : http://cdsweb.cern.ch/record/1223965
Contact : http://press.web.cern.ch/press/ContactUs.html
Press contact:
James Gillies
Head of Communication and CERN's spokesman
Tel.: + 41 22 76 741 01
Email: James.Gillies@cern.ch
* CERN, the European Organization for Nuclear Research, is the world's
leading laboratory for particle physics. It has its headquarters in
Geneva. At present, its Member States are Austria, Belgium, Bulgaria, the
Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy,
Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden,
Switzerland and the United Kingdom. India, Israel, Japan, the Russian
Federation, the United States of America, Turkey, the European Commission
and UNESCO have Observer status.
To unsubscribe from the Interactions News Wire, please email webmaster@interactions.org with "remove" in the subject line.
http://cmsdoc.cern.ch/cms/performance/F ... tary09.htm
AND COLLIDED THEM !!!
*******************************************
Source: CERN
Content: Press Release
Date Issued: 23 November 2009
*******************************************
Two circulating beams bring first collisions in the LHC
Geneva, 23 November 2009. Today the LHC circulated two beams
simultaneously for the first time, allowing the operators to test the
synchronization of the beams and giving the experiments their first chance
to look for proton-proton collisions. With just one bunch of particles
circulating in each direction, the beams can be made to cross in up to two
places in the ring. From early in the afternoon, the beams were made to
cross at points 1 and 5, home to the ATLAS and CMS detectors, both of
which were on the lookout for collisions. Later, beams crossed at points 2
and 8, ALICE and LHCb.
"It's a great achievement to have come this far in so short a time," said
CERN* Director General Rolf Heuer. "But we need to keep a sense of
perspective – there's still much to do before we can start the LHC physics
programme."
Beams were first tuned to produce collisions in the ATLAS detector, which
recorded its first candidate for collisions at 14:22 this afternoon.
Later, the beams were optimised for CMS. In the evening, ALICE had the
first optimisation, followed by LHCb.
"This is great news, the start of a fantastic era of physics and hopefully
discoveries after 20 years' work by the international community to build a
machine and detectors of unprecedented complexity and performance," said
ATLAS spokesperson Fabiola Gianotti.
"The events so far mark the start of the second half of this incredible
voyage of discovery of the secrets of nature," said CMS spokesperson
Tejinder Virdee.
"It was standing room only in the ALICE control room and cheers erupted
with the first collisions," said ALICE spokesperson Jurgen Schukraft.
"This is simply tremendous."
"The tracks we're seeing are beautiful," said LHCb spokesperson Andrei
Golutvin, "we're all ready for serious data taking in a few days time."
These developments come just three days after the LHC restart,
demonstrating the excellent performance of the beam control system. Since
the start-up, the operators have been circulating beams around the ring
alternately in one direction and then the other at the injection energy of
450 GeV. The beam lifetime has gradually been increased to 10 hours, and
today beams have been circulating simultaneously in both directions, still
at the injection energy.
Next on the schedule is an intense commissioning phase aimed at increasing
the beam intensity and accelerating the beams. All being well, by
Christmas, the LHC should reach 1.2 TeV per beam, and have provided good
quantities of collision data for the experiments' calibrations.
For photos of the first collisions :
http://press.web.cern.ch/press/PressRel ... 7.09E.html
For photos inside the CERN Control Centre see :
http://cdsweb.cern.ch/record/1223969?ln=fr
Follow LHC progress on twitter at http://www.twitter.com/cern
For photos, video and latest information see:
http://press.web.cern.ch/press/lhc-first-physics/
See today's press conference here : http://cdsweb.cern.ch/record/1223965
Contact : http://press.web.cern.ch/press/ContactUs.html
Press contact:
James Gillies
Head of Communication and CERN's spokesman
Tel.: + 41 22 76 741 01
Email: James.Gillies@cern.ch
* CERN, the European Organization for Nuclear Research, is the world's
leading laboratory for particle physics. It has its headquarters in
Geneva. At present, its Member States are Austria, Belgium, Bulgaria, the
Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy,
Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden,
Switzerland and the United Kingdom. India, Israel, Japan, the Russian
Federation, the United States of America, Turkey, the European Commission
and UNESCO have Observer status.
To unsubscribe from the Interactions News Wire, please email webmaster@interactions.org with "remove" in the subject line.
http://cmsdoc.cern.ch/cms/performance/F ... tary09.htm